firewire: core: fix an information leak
If a device exposes a sparsely populated configuration ROM,
firewire-core's sysfs interface and character device file interface
showed random data in the gaps between config ROM blocks. Fix this by
zero-initialization of the config ROM reader's scratch buffer.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
diff --git a/drivers/firewire/core-device.c b/drivers/firewire/core-device.c
index 150a8ba..f612119 100644
--- a/drivers/firewire/core-device.c
+++ b/drivers/firewire/core-device.c
@@ -514,6 +514,7 @@
return -ENOMEM;
stack = &rom[READ_BIB_ROM_SIZE];
+ memset(rom, 0, sizeof(*rom) * READ_BIB_ROM_SIZE);
device->max_speed = SCODE_100;